Electrification

Electrification Permanent Equipment (Catenary)

Electrification CER Equipment

MARCH 2015 Research, Planning & Coordination Department

Railway Current Types

ELECTRIFICATION

2

• A railway electrification system supplies electric power to railway

trains and trams without an on-board prime mover or local fuel

supply.

• Electrification has many advantages but requires significant capital

expenditure. Selection of an electrification system is based on

economics of energy supply, maintenance, and capital cost

compared to the revenue obtained for freight and passenger traffic.

• Different systems are used for urban and intercity areas; some

electric locomotives can switch to different supply voltages to allow

flexibility in operation.


ELECTRIFICATION

3


CATENARY

Items of a catenary pole

4

Catenary provides neccessary current to electrical vehicles on the railways.


CATENARY

Catenary Wire

Contact Wire

Dropper

Geometric Characteristics of Catanery

5

CATENARY

MARCH 2015 Research, Planning & Coordination Department 6


CATENARY

7


CATENARY

8

• Made of bronze

• Cross sectional area= 65 mm2

• 600 gr/m

• CER fracture load= 4300 kg

• External diameter= 10,5 mm

CATENARY CATENARY WIRE


• Cross sectional area depends on current and speed of the

train.

• On 120 km/h and 160 km/h speed limits, the cross

sectional area is 107 mm2

• On km/h speed limits, the cross sectional area is 107 mm2

• On 750 V. DC. ve 1500 V. DC voltages catenaries, the cross

sectional areas are 120 and 150 mm2

• CER fracture load= 3905 kg for 107 mm2

• 950 gr/m



• Diameter= 5mm

• Distance between two dropper= 9 m

• Provide connection between catenary wire and contact wire

CATENARY DROPPER

12

CATENARY GEOMETRIC CHARACTERISTICS

1. SYSTEM HEIGHT:

• Distance between catenary wire contact wire

• Depends on the line geometry and speed of the trains

• Generally 1,4 m in Turkey

• At high speed trains= 1,8 m

• At tunnels= 0,30 m, 0,60 m, 0,90 m MARCH 2015 Research, Planning & Coordination Department 13

2. CONTACT WIRE HEIGHT:

• Distance between contact wire and rail head

• Generally 5,75 m

• At brigdes and tunnels 4,95 m



14

3. ECCENTRICITY:

• Asymetric design of contact wire to prevent abrsion

on pantograph body.

• For 1950 mm pantograph , the eccentricity is +-400

mm

• For 1600 mm pantograph , the eccentricity is +-200

mm



15



16

ELECTRIFICATION CER EQUIPMENT


• Internal system of the electrification

• Consists of different functional electrical machines

• The last phase of electrification to create traction

power

• Machines and designs of system may be different

depending on functionality, rail line geometry, needed

CER traction power etc.

17


ELECTRIFICATION CER EQUIPMENT

18

Voltage System in EU Railways


CURRENT TYPES

19

Voltage Systems in Europe Railways

Direct Current (DC) Alternating Current (AC)

600 V

750 V

1,5 kV

3 kV

15 kV 16 2/3 Hz

25 kV 50Hz


CURRENT TYPES

20

• Minimum distances between catenary line and

conductor surfaces of the vehicles.

• EN50119 standard is used.

750 V 1,5 Kv 3 kV 15 kV 25 kV

Static (mm) 100 100 150 150 270

Dynamic (mm) 50 50 50 100 150

SAFETY DISTANCEDIRECT CURRENT ALTERNATING CURRENT

Minimum distances according to EN50119


CURRENT TYPES SAFETY DISTANCE IN CATENARY

21

Electrification

Documents

Transcript of Electrification